CN211436867U

CN211436867U - Coating device for membrane electrode

Info

Publication number: CN211436867U
Application number: CN201922394880.6U
Authority: CN
Inventors: 孙婉露; 余罡; 夏丰杰; 袁满; 李柯
Original assignee: Wuhan Institute of Marine Electric Propulsion China Shipbuilding Industry Corp No 712 Institute CSIC
Current assignee: Wuhan Institute of Marine Electric Propulsion China Shipbuilding Industry Corp No 712 Institute CSIC
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-09-08
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to the technical field of coating, and discloses a coating device for a membrane electrode, which comprises a bracket and at least one belt conveyor, wherein each belt conveyor comprises two rotating assemblies, an annular belt, a sealing membrane assembly and a vacuumizing assembly, the two rotating assemblies are parallel to each other and arranged at intervals, each rotating assembly comprises two rotating rollers, the two rotating rollers are coaxially and rotatably connected to the bracket, and the two rotating rollers are arranged at intervals; the peripheral surface of the annular belt is provided with a plurality of adsorption holes, one end of the annular belt is sleeved on the two rotating rollers of one rotating assembly, and the other end of the annular belt is sleeved on the two rotating rollers of the other rotating assembly; the sealing membrane assembly is arranged in the annular belt and connected to the inner wall of the annular belt, the sealing membrane assembly is positioned between the two coaxially arranged rotating rollers, and a plurality of cavities are formed by the sealing membrane assembly and the inner wall of the annular belt in a surrounding manner; the vacuumizing assembly is communicated with each cavity and is used for vacuumizing the cavities. The utility model discloses can effectually prevent that the girdle from wearing and tearing.

Description

Coating device for membrane electrode

Technical Field

The utility model relates to a coating technology field, concretely relates to coating unit for membrane electrode.

Background

In the coating equipment, a moving steel belt is in sealing connection with a vacuum cavity so as to realize the sealing of the vacuum cavity, but the steel belt and the vacuum cavity are always rubbed to cause the abrasion of the steel belt, so that the deformation or the breakage of the steel belt is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned technique not enough, provide a coating unit for membrane electrode, solve among the prior art technical problem of friction always between steel band and the vacuum chamber.

In order to achieve the above technical object, the present invention provides a coating apparatus for a membrane electrode, comprising:

a support;

each belt conveyor comprises two rotating assemblies, an annular belt, a sealing membrane assembly and a vacuumizing assembly, the two rotating assemblies are parallel to each other and arranged at intervals, each rotating assembly comprises two rotating rollers, the two rotating rollers are coaxial and can be rotatably connected to the support, and the two rotating rollers are arranged at intervals; a plurality of adsorption holes are formed in the peripheral surface of the annular belt, one end of the annular belt is sleeved on the two rotating rollers of one rotating assembly, and the other end of the annular belt is sleeved on the two rotating rollers of the other rotating assembly; the sealing membrane assembly is arranged in the annular belt and connected to the inner wall of the annular belt, the sealing membrane assembly is positioned between the two coaxially arranged rotating rollers, and a plurality of cavities are formed by the sealing membrane assembly and the inner wall of the annular belt in a surrounding manner; the vacuumizing assembly is communicated with each cavity and is used for vacuumizing the cavities.

Compared with the prior art, the beneficial effects of the utility model include: through setting up the seal membrane subassembly and connecting the seal membrane subassembly in the inner wall of girdle for the seal membrane subassembly forms a plurality of cavitys with the inner wall of girdle, and when the rotating in-process of girdle, the seal membrane subassembly is followed and is rotated, avoids wearing and tearing to appear in the girdle, and the evacuation subassembly provides sufficient negative pressure suction for the substrate through cavity, bleeder vent, can prevent effectively that the substrate from taking place the deformation that swells.

Drawings

Fig. 1 is a three-dimensional schematic view of the present invention;

fig. 2 is a three-dimensional schematic view of another perspective of the present invention;

fig. 3 is a schematic structural diagram of a rotating roll, an annular belt, a sealing membrane assembly, a heating pipe, a first reversing roll, a second reversing roll, a first extrusion head, a second extrusion head, an unwinding roll, a winding roll and a substrate according to the present invention;

FIG. 4 is a three-dimensional schematic view of a rotor roll and sealing membrane assembly of the present invention;

FIG. 5 is a three-dimensional schematic view of a heating assembly of the present invention;

FIG. 6 is a schematic structural view of a sealing membrane module and a vacuum pumping module according to the present invention;

fig. 7 is a schematic structural diagram of the communication pipe and the three-way valve of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model provides a coating unit for membrane electrode, as shown in fig. 1 to 7, including support 1, at least one belt conveyor 2, a first switching-over roller 3, second switching-over roller 4, first extrusion head 5, second extrusion head 6, unreel roller 7, wind-up roll 8, support 1 is the mount that the section bar concatenation formed, also can be for other mounts that have supporting function.

Each belt conveyor 2 comprises two rotating assemblies 21, an annular belt 22, a sealing membrane assembly 23, a vacuumizing assembly 24 and a heating assembly 25, wherein the two rotating assemblies 21 are parallel to each other and arranged at intervals, each rotating assembly 21 comprises two rotating rollers 211, the two rotating rollers 211 are coaxially and rotatably connected to the support 1, and the two rotating rollers 211 are arranged at intervals.

Preferably, the number of the belt conveyors 2 is two, the two belt conveyors 2 are parallel to each other, and the belt conveyor 2 is disposed above the other belt conveyor 2.

A plurality of absorption holes have been seted up to the outer peripheral face of girdle 22, absorption hole evenly distributed is in girdle 22, just the absorption hole is tiny hole, and two live-rollers 211 of a live-rollers 21 are located to two live-rollers 211, the other pot head of another live-rollers 21 that rotate of rotating assembly 21 are located to the pot head of girdle 22.

Preferably, the endless belt 22 is a steel belt which is resistant to high temperatures and does not deform and stick to the substrate a.

The sealing membrane assembly 23 is arranged in the annular belt 22 and connected to the inner wall of the annular belt 22, the sealing membrane assembly 23 is positioned between two coaxially arranged rotating rollers 211, and a plurality of cavities are formed by surrounding the sealing membrane assembly 23 and the inner wall of the annular belt 22.

Preferably, a plurality of said cavities are evenly distributed along the circumference of the annular band 22.

Preferably, the sealing membrane assembly 23 comprises an annular membrane 231, two annular baffles 232 and a plurality of separating sheets 233, the annular membrane 231 and the annular belt 22 are coaxially arranged, the inner ring of the annular baffle 232 is connected to one end of the annular membrane 231, the outer ring of the annular baffle 232 is connected to the inner wall of the annular belt 22, and the annular baffle 232, the annular membrane 231 and the annular belt 22 enclose a cavity; the partition plate 233 is arranged along the axial direction of the annular membrane 231, the plurality of partition plates 233 are uniformly distributed along the circumferential direction of the annular belt 22, the four side walls of the partition plate 233 are respectively connected to the annular belt 22, the annular membrane 231 and the two annular blocking plates 232, and the partition plate 233 partitions the cavity into a plurality of cavities.

Preferably, the annular membrane 231, the two annular flaps 232, and the plurality of partition pieces 233 are integrally formed.

A vacuum evacuation assembly 24 is in communication with each of the cavities for evacuating the cavities.

Preferably, the vacuum pumping assembly 24 includes a vacuum pump 241 and at least one connection pipe 242, the connection pipes 242 are disposed in one-to-one correspondence with the cavities, one end of each connection pipe 242 is connected to an air inlet end of the vacuum pump 241, and the other end is connected to the corresponding cavity.

The communication pipes 242 are hoses, the communication pipes 242 may be one, two, three, or the like, preferably, the number of the communication pipes 242 is eight, and a groove for the communication pipes 242 to pass through is formed in the side wall of the bracket 1.

Preferably, the vacuum pumping assembly 24 further comprises a plurality of three-way valves 243, the three-way valves 243 are disposed in one-to-one correspondence with the communication pipes 242, the three-way valves 243 are disposed on the corresponding communication pipes 242, and when the three-way valves 243 are opened, the vacuum pump 241 is communicated with the cavity; when the three-way valve 243 is closed, the cavity is communicated with the outside.

Further preferably, the three-way valve 243 is fixed to the bracket 1, the three-way valve 243 is a two-position three-way electromagnetic valve and is of a normally open type, the two-position three-way electromagnetic valve has a first air inlet, a first air outlet and a second air outlet, the first air inlet and the first air outlet are both communicated with the communicating pipe 242, and the second air outlet is communicated with the outside.

The heating unit 25 is used to heat the substrate a wound around the endless belt 22.

Preferably, the heating assembly 25 includes a cover 251 and a plurality of heating pipes 252, the cover 251 is connected to the support 1 and has an open end disposed opposite to the top of the endless belt 22, and the plurality of heating pipes 252 are disposed in the cover 251 and are equidistantly distributed along the length of the endless belt 22.

Further preferably, the heating pipe 252 is an infrared heating pipe.

Preferably, each belt conveyor 2 further comprises a first motor 26, a first speed reducer 27, the first speed reducer 27 is fixed on the support 1, an input shaft of the first speed reducer 27 is coaxially connected to an output shaft of the first motor 26, a housing of the first speed reducer 27 is connected to a housing of the first motor 26, and an output shaft of the first speed reducer 27 is coaxially connected to a rotating roller 21.

The first reversing roller 3 is arranged between the two belt conveyors 2 and is rotatably connected to the bracket 1 along the axial direction of the rotating roller 21, and the first reversing roller 3 is arranged on the discharge side of the lower belt conveyor 2; the second reversing roller 4 is rotatably connected to the bracket 1 along the axial direction of the rotating roller 21, and the second reversing roller 4 is arranged on the feeding side of the belt conveyor 2 above and is arranged right above the first reversing roller 3.

The first extrusion head 5 is arranged above a belt conveyor 2 and opposite to an endless belt 22 of the belt conveyor 2, the first extrusion head 5 being used for coating one side of a substrate a.

The second extrusion head 6 is arranged above the other belt conveyor 2 and opposite to the endless belt 22 of the belt conveyor 2, and the second extrusion head 6 is used for coating the other side of the substrate a.

The unwinding roller 7 is rotatably attached to the frame 1 in the axial direction of the rotating roller 21.

The unwinding roller 7 is arranged below the annular belt 22 of the belt conveyor 2 below and on the feeding side of the belt conveyor 2, and the discharging side of the unwinding roller 7 is flush with the feeding side of the annular belt 22.

The winding roller 8 is rotatably connected to the bracket 1 along the axial direction of the rotating roller 21, the winding roller 8 is arranged below the annular belt 22 of the belt conveyor 2 above, the feeding side of the unwinding roller 7 is flush with the discharging side of the annular belt 22, and the unwinding roller 7 is arranged right above the unwinding roller 7.

Preferably, the coating device for the membrane electrode further comprises a driving assembly 9, the driving assembly 9 comprises a second motor 91 and a second reducer 92, the second reducer 92 is fixed on the support 1, an input shaft of the second reducer 92 is coaxially connected to an output shaft of the second motor 91, a housing of the second reducer 92 is connected to a housing of the second motor 91, and an output shaft of the second reducer 92 is coaxially connected to the take-up roll 8.

The utility model discloses a concrete work flow: the first motor 26 and the second motor 91 are started, the first motor 26 and the second motor 91 drive the unwinding roller 7, the winding roller 8, the rotating roller 21 and the annular belt 22 to rotate through the first speed reducer 27 and the second speed reducer 92, and the coiled material sequentially winds around the unwinding roller 7, the lower annular belt 22, the first reversing roller 3, the second annular roller, the upper annular belt 22 and the winding roller 8.

During the rotation of the endless belt 22, the sealing film assembly 23 follows the rotation of the endless belt 22.

The three-way valve 243 is in an open state, the vacuum pump 241 is started, the vacuum pump 241 vacuumizes the cavity through the communicating pipe 242, the inner wall of the annular belt 22 applies negative pressure suction to the substrate a through the suction hole, the substrate a is vacuum-adsorbed on the annular belt 22, and the substrate a is prevented from swelling and deforming after contacting with slurry.

The first extrusion head 5 is operated to apply the catalyst slurry to one side of the base material a,

the heating pipe 252 is started, the heating pipe 252 carries out heat radiation outwards, heat is directly transferred to one side of the base material coated with the slurry, the slurry can be rapidly dried, the heat is not easy to radiate outwards under the action of the cover body 251, heat energy can be better utilized, heat energy loss is prevented, and electric energy is saved.

When the substrate a coated with the slurry leaves the cover 251, the drying is completed, and when the substrate a coated with the slurry continues to move, the three-way valves near the discharge end of the endless belt 22 are controlled so that they are closed, and at this time, the cavity is communicated with the outside, the annular belt 22 loses the vacuum adsorption force to the substrate a, the substrate a can be easily separated from the annular belt 22, the substrate a bypasses the first reversing roller 3 and the second annular roller, one side attached with the dry slurry is attached to the annular belt 22 above, the second extrusion head 6 starts to work, the catalyst slurry is coated on the other side of the substrate a, the vacuum pump 241 is started, the vacuum pump 241 vacuumizes the cavity, the vacuum pump 241 applies negative pressure suction to the substrate a through the adsorption holes, and the vacuum pump 241 adsorbs the substrate a on the annular belt 22 in vacuum, so that the substrate a is prevented from swelling and deforming after contacting with the slurry; the heating pipe 252 is started, the heating pipe 252 radiates heat outwards, and the heat is directly transferred to the other side of the base material a, so that the slurry can be dried quickly; when the substrate a coated with the slurry leaves the cover 251, the drying is completed, when the substrate a coated with the slurry continues to move, the three-way valves close to the discharge end of the endless belt 22 are controlled, so that the three-way valves are closed, at the time, the cavity is communicated with the outside, the endless belt 22 here loses the vacuum adsorption force on the substrate a, the substrate a can be easily separated from the endless belt 22, the substrate a loses the negative pressure adsorbed on the endless belt 22, the substrate a is continuously wound on the winding roller 8, and the coating of the substrate is completed.

The utility model discloses can carry out rapid draing to substrate a after the coating, prevent that substrate a swelling from warping.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A coating apparatus for a membrane electrode, comprising:

a support;

2. A coating apparatus for a membrane electrode according to claim 1, wherein a plurality of said cavities are uniformly distributed along a circumferential direction of said endless belt.

3. The coating apparatus for a membrane electrode according to claim 1, wherein the sealing membrane assembly includes an annular membrane, two annular baffles, and a plurality of separating sheets, the annular membrane is disposed coaxially with the annular band, an inner ring of the annular baffle is connected to one end of the annular membrane, an outer ring of the annular baffle is connected to an inner wall of the annular band, and the annular baffles, the annular membrane and the annular band enclose a cavity; the partition sheets are arranged along the axial direction of the annular membrane, the partition sheets are uniformly distributed along the circumferential direction of the annular belt, the partition sheets are respectively connected to the annular belt, the annular membrane and the two annular blocking sheets, and the cavity is divided into a plurality of cavities by the partition sheets.

4. The coating apparatus for a membrane electrode according to claim 1, wherein the evacuation assembly includes a vacuum pump, and a plurality of communicating pipes, the communicating pipes are disposed in one-to-one correspondence with the cavities, one end of each communicating pipe communicates with an air inlet end of the vacuum pump, and the other end communicates with the corresponding cavity.

5. The coating apparatus for a membrane electrode according to claim 4, wherein the vacuum pumping assembly further comprises a plurality of three-way valves, the three-way valves are disposed in one-to-one correspondence with the communication pipes, the three-way valves are disposed in the corresponding communication pipes, and when the three-way valves are opened, the vacuum pump communicates with the cavity; when the three-way valve is closed, the cavity is communicated with the outside.